What is Evaporation ?

Evaporation is the process by which a liquid changes into vapour at any temperature below its boiling point, mainly from the surface of the liquid.

How Does Evaporation Cause Cooling ?

• During evaporation, high-energy particles at the surface of a liquid escape into the air as vapour.
• These particles take heat energy from the liquid or the surrounding surface.
• As a result, the remaining liquid loses energy and becomes cooler.

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